The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 03, 2017
Filed:
Sep. 27, 2013
Applicant:
Seagate Technology Llc, Cupertino, CA (US);
Inventors:
Binh Kim Lieu, Minneapolis, MN (US);
Mark Lowell Elliott, Eden Prairie, MN (US);
Raye A. Sosseh, Minneapolis, MN (US);
Assignee:
SEAGATE TECHNOLOGY LLC, Cupertino, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02P 3/18 (2006.01); H02J 9/06 (2006.01); G06F 1/26 (2006.01);
U.S. Cl.
CPC ...
H02P 3/18 (2013.01); G06F 1/263 (2013.01); H02J 9/06 (2013.01);
Abstract
A back electromotive force of a rotating motor is converted into a voltage for a load by driving, in accordance with a duty cycle, at least one switching circuit that couples the back electromotive force to a load through a rectifying circuit. An error signal is generated that is a difference between the load voltage and a reference voltage. The duty cycle is controlled as a function of the error signal to cause the load voltage to approach the reference voltage.